<?php
interface Person{
    public function test1();
    public function test2();
}
interface Person3{
    public function test3();
}

class Person2{

}

class Person4{

}

class Students extends Person2 implements Person,Person3 {
    public function test1()
    {
        // TODO: Implement test1() method.
        echo 'test1';
    }
    public function test2()
    {
        // TODO: Implement test2() method.
    }
    public function test3()
    {
        // TODO: Implement test3() method.
    }
}